Both models ship with Intel Xeon E5 processors that can be clocked up to 3.9GHz. The quad-core model comes with 12 GB of RAM, compared to the 16 GB available in the 6-core model. The cheaper version is outfitted with dual AMD FirePro D300 graphics processors, while the more expensive configuration sports two of the beefier FirePro D500. Both models can drive three separate displays at 4k resolution or up to six Thunderbolt displays.

Both models can be upgraded to chips with 8 or 12 cores, a D700 graphics cards, and 64 GB of RAM.

The default storage option is 256 GB of flash storage, though both machines can be customized with up to 1 TB of space. While the built-in storage isn’t user-upgradable, a Thunderbolt drive can supplement the existing storage options if you find yourself needing more room.

All configurations also ship with a variety of I/O ports, including four USB 3.0 ports, dual gigabit Ethernet, six Thunderbolt ports (configured to the improved Thunderbolt 2 spec) and an HDMI port. The Mac Pro also supports the latest 802.11ac Wi-Fi standard and low-power Bluetooth 4.0.